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Question ID 4978

Option A

A.    It produces an error because all columns used in the NATURAL join should have a qualifier
 

Option B

B.    It produces an error because a column used in the NATURAL join cannot have a qualifier
 

Option C

C.    It produces an error because the NATURAL join can be used only with two tables
 

Option D

D.    It executes successfully
 

Correct Answer B
Explanation


Question ID 4979

Evaluate the following SQL statements:
Exhibit:
 
Exhibit:
 
 
The above command fails when executed. What could be the reason?

Option A

A.    The BETWEEN clause cannot be used for the CHECK constraint
 

Option B

B.    SYSDATE cannot be used with the CHECK constraint
 

Option C

C.    ORD_NO and ITEM_NO cannot be used as a composite primary key because ORD_NO is also the FOREIGN KEY
 

Option D

D.    The CHECK constraint cannot be placed on columns having the DATE data type
 

Correct Answer B
Explanation

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